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Thread: sand filter question

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    sand filter question

    Hello,
    I currently have a Hayward pro series sand filter. Model number S244T. It says on the label that the GPM filtration rate is 20. I have a 35,000 gallon pool and according to my calculations if I ran my filter 24/7 my GPM would be approx 25. Which is do run it 24/7 mainly because I'm trying to get in clear. So my question is: Is this pump not really filtering my pool effectively or too small of a filter than what I actually need?
    33,000 gallons
    Sand filter
    IG
    Vinyl
    TF-100

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    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: sand filter question

    You appear to be reading the specs incorrectly. The Hayward S244T has a design flow rate of 62 GPM, which is 20 GPM/sqft. Even so, that filter is too small for that pool. You can get away with it, but it really isn't recommended, will need to be cleaned frequently, and is likely to become channeled.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Re: sand filter question

    ok so my next question is what should I buy or how big? Honestly I will not buy one this year, it will have to be next year becauase I can't financially do it this year. Here are some answers to questions you may ask. The pool is L shapped, and has 1 skimmer, and 2 jets. Also has 2 main drains. Not real sure on the pump size. I can look when I get back home though. My pool is clearing up, very slowly. I have been keeping it at shock level for a couple weeks beacuse I had some algae in it. Might be why it's taking so long to clear up.
    33,000 gallons
    Sand filter
    IG
    Vinyl
    TF-100

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